Welcome to the club. There pretty much are no answers, just theories primarily played out as thought experiments. Its on of those areas where you can pick out who knows less (or is being disingenuous) by seeing who most confidently speaks about having answers.
We don't know what consciousness is, and we don't know what it means to "think". There, I saved you a decade of reading.
Edit: My choice theory is panpsychism, https://plato.stanford.edu/entries/panpsychism/ but again, we don't yet know how to verify any of this (or any other theory).